Question: Did the brother of Frederick IV, Duke of Austria have any children?
Paraphrase: Is it true that the brother of Frederick IV, Duke of Austria had children?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q550692 wdt:P3373 ?X . ?X wdt:P40 ?answer}
Answer: Margaret of Austria, Catherine of Austria, Albert VI, Archduke of Austria, Frederick III, Holy Roman Emperor, Alexander von Habsburg, Rudolf von Habsburg, Leopold von Habsburg, Ernst II von Habsburg, Anna von Habsburg